1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1345c1d8acb901a013f9cc04e5af2432e25061c265e9a148a24f7825ce0c591b. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7865774c-d6ca-4fb8-af43-f92d41158260.json and https://artists.proofprofile.net/proofs/artist/7865774c-d6ca-4fb8-af43-f92d41158260.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd426820c0f687e99d6ec65d9abbb3342ec086a73366b60a0e0f79cd22b89f169. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXSVC1902780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524ba009d7e8eb0a1763db03081dbe3858aa042fec88830bbb76e3adc8a799e7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXSVC1902781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8baacaa68ced0e3fd4b677ef1be7b14d4f13e8c407a8a10e5b71e70aae08e37. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXSVC1902782.
A Vida em Seus Métodos Diz Calma - Acorda Amor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea7d20899296ba9d9ad62626e96f8739450a8724aea61c7ad896d11e59898b8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXSVC1902783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb5422e74b3b50641ca7d762d64ba9205e9d1e8e3aba794c991cb5c8d0dc9d8. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXSVC1902784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f03fb2313c4eb78e440dd6e213032e8086d019b190a3354d66d6e8c32ad0bb9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXSVC1902785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c70c824eecd11226b419565fd5a620de153042fa9916024ff76f1ee1a798d44. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXSVC1902786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9445406b0a9ab56872247cea572114f9636daf5c531fd69b44d8197ae7065c28. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXSVC1902787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x847658c5eb247bba25839427b345563e11297ad8829a246fcd2185dffce926f6. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXSVC1902788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0711eb669d24e3d64463fac88457b2ae84bbb18fed81e74b5c93c2412be6f822. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXSVC1902789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eae75976e42228a7c9a5da4b4c48b6e8f8a71dce8bfb6205fd94bdfc534b548. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXSVC1902790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b0f1aa7be234d785f112b385306b8d088e98e242518778edb01afa25880b7f7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXSVC1902791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b1b7511713ed9870f94e2ebbbc50bbf096a1fab1c80218bf66d0235ac02abe. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXSVC1902792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d1f7ea9e8e816e0ad8f30ef8c9c6dc7e560574253993c4f354cc76348cbe444. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXSVC1902793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb48e3a11d762116533e51294309dab2f5badf95200e5f57f544ebe9105a0815. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXSVC1902794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ac619f529630430f232ed81440f341cf936bf20d718b58c230a11635cbf179. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXSVC1902795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0691f3f9fea7277b528b2d0ba5c2f203a34bbbcb3e62c6fe1234f3a08a0ca632. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXSVC1902796.
Sem Preguiça para Fazer Revolução - Acorda Amor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca584de36c5408c28d1d941620ca27e0be8dda9649093b5d7722aaef4bc24d3c. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXSVC1902797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0711eb669d24e3d64463fac88457b2ae84bbb18fed81e74b5c93c2412be6f822. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXSVC1902789.